Acrostichum danaeifolium Langsd. & Fisch.

Matos, Fernando B., Bohn, Amabily & Labiak, Paulo H., 2020, The ferns and lycophytes of Reserva Natural Guaricica, Antonina, Paraná, Brazil, Check List 16 (1), pp. 183-206 : 196

Acrostichum danaeifolium Langsd. & Fisch.

Figures 3E, 5B

Examined material. BRAZIL • 2 specimens; Faisqueira ; 25°22′14″S, 048°39′56″W; alt. 15 m; 7 Oct. 2005; F.B. Matos & P.B. Schwartsburd 855 leg.; MBM333063, UPCB120 • 5 specimens; Trilha do Quei- mado; 25°23′03″S, 048°42′06″W; alt. 10 m; 11 Jul. 2006; F.B. Matos et al. 1211 leg.; CEPEC122106, MBM333064 , NY886668, RB638223, UPCB123 • 1 specimen; Trilha Caixa d′Água ; 25°23′19″S, 048°40′05″W; alt. at sea level; 12 Jun. 2019; F.B. Matos et al. 2656 leg; UPCB44485 • 1 specimen; Trilha do Neno ; 25°22′36″S, 048°40′10″W; alt. 10 m; 28 Jun. 2007; P.H. Labiak et al. 3981 leg.; UPCB124 .

Identification. Characterized by massive, erect stems, large fleshy roots, 1-pinnate, coriaceous leaves that are up to 5 m long, finely netted veins, and acrostichoid sori. It differs from A. aureum L., which was not found in the RPPN, by the presence of numerous, minute, erect hairs on the abaxial blade surfaces and leaves usually fertile for the entire length (vs fertile only in the distal 1/4–1/3).

Distribution and habitat. Neotropical. Terrestrial in brackish waters.